Gents, is your garden lacking in scent at this time of year? Ladies, are you ashamed to invite a friend round for tea on the lawn this month? (laughs) People…
They are fully to frost hardy and will grow in sun or semi-shade in deep, fertile not too dry soil. To thin out overgrown plants cut out some older shoots after flowering.
You can propagate from cuttings in the summer or from seed in autumn.
Pests, diseases or disorders
All are prone to honey fungus and leaf spot. Aphids and viburnum beetles may be a problem.